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<?php |
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namespace Generics\Socket; |
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use Composer\CaBundle\CaBundle; |
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use Generics\ResetException; |
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use Generics\Streams\SocketStream; |
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use Countable; |
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use Exception; |
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abstract class SecureSocket implements SocketStream |
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{ |
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/** |
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* The socket handle |
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* |
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* @var resource |
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*/ |
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protected $handle; |
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/** |
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* The socket endpoint |
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* |
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* @var Endpoint |
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*/ |
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protected $endpoint; |
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/** |
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* The stream context |
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* |
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* @var resource |
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*/ |
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private $streamContext; |
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/** |
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* Create a new socket |
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* |
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* @param Endpoint $endpoint |
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* The endpoint for the socket |
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*/ |
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public function __construct(Endpoint $endpoint) |
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{ |
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$this->endpoint = $endpoint; |
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$this->open(); |
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} |
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/** |
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* |
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* {@inheritdoc} |
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* @see \Generics\Streams\InputStream::read() |
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*/ |
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public function read($length = 1, $offset = null): string |
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{ |
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return stream_get_contents($this->handle, $length, $offset == null ? - 1 : intval($offset)); |
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} |
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/** |
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* |
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* {@inheritdoc} |
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* @see \Generics\Streams\Stream::isOpen() |
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*/ |
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public function isOpen(): bool |
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{ |
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return is_resource($this->handle) && ! feof($this->handle); |
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} |
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/** |
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* |
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* {@inheritdoc} |
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* @see \Generics\Streams\OutputStream::flush() |
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*/ |
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public function flush() |
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{ |
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// flush not available on streams |
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} |
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/** |
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* |
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* {@inheritdoc} |
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* @see \Generics\Streams\Stream::ready() |
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*/ |
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View Code Duplication |
public function ready(): bool |
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{ |
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if (! is_resource($this->handle)) { |
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return false; |
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} |
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$read = array( |
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$this->handle |
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); |
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$write = null; |
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$except = null; |
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$num = @stream_select($read, $write, $except, 0); |
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if ($num === false) { |
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throw new SocketException("Could not determine the stream client status"); |
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} |
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if ($num < 1) { |
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return false; |
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} |
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if (! in_array($this->handle, $read)) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* |
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* {@inheritdoc} |
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* @see Countable::count() |
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*/ |
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public function count() |
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{ |
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$meta = stream_get_meta_data($this->handle); |
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foreach ($meta as $data) { |
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if (strstr($data, 'Content-Length:')) { |
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return intval(trim(substr($data, $start, 15))); |
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} |
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} |
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throw new SocketException("Cannot count elements of stream client"); |
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} |
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/** |
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* |
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* {@inheritdoc} |
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* @see \Generics\Resettable::reset() |
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*/ |
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View Code Duplication |
public function reset() |
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{ |
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try { |
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$this->close(); |
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$this->open(); |
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} catch (Exception $ex) { |
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throw new ResetException($ex->getMessage(), array(), $ex->getCode(), $ex); |
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} |
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} |
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/** |
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* |
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* {@inheritdoc} |
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* @see \Generics\Streams\Stream::close() |
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*/ |
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public function close() |
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{ |
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if (is_resource($this->handle)) { |
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fclose($this->handle); |
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$this->handle = null; |
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} |
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} |
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/** |
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* |
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* {@inheritdoc} |
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* @see \Generics\Streams\OutputStream::write() |
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*/ |
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public function write($buffer) |
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{ |
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if(!$this->isWriteable()) { |
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throw new SocketException("Stream is not ready for writing"); |
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} |
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$len = strlen($buffer); |
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$written = 0; |
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do { |
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$bytes = fwrite($this->handle, $buffer); |
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if ($bytes === false) { |
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throw new SocketException("Could not write {len} bytes to stream (at least {written} written)", array( |
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'len' => $len, |
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'written' => $written |
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)); |
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} |
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$written += $bytes; |
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} while ($written != $len); |
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} |
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/** |
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* |
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* {@inheritdoc} |
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* @see \Generics\Streams\OutputStream::isWriteable() |
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*/ |
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View Code Duplication |
public function isWriteable(): bool |
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{ |
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if (! is_resource($this->handle)) { |
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return false; |
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} |
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$read = null; |
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$write = array( |
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$this->handle |
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); |
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$except = null; |
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$num = @stream_select($read, $write, $except, 0, 0); |
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if ($num === false) { |
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throw new SocketException("Could not determine the stream client status"); |
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} |
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if ($num < 1) { |
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return false; |
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} |
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if (! in_array($this->handle, $write)) { |
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return false; |
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} |
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return true; |
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} |
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private function open() |
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{ |
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$this->prepareStreamContext(); |
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$this->handle = stream_socket_client(sprintf('ssl://%s:%d', $this->endpoint->getAddress(), $this->endpoint->getPort()), // |
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$error, $errorString, 2, STREAM_CLIENT_CONNECT, $this->streamContext); |
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if ($error) { |
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throw new SocketException($errorString, array(), $error); |
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} |
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} |
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private function prepareStreamContext() |
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{ |
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$opts = array( |
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'http' => array( |
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'method' => "GET" |
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) |
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); |
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$caPath = CaBundle::getSystemCaRootBundlePath(); |
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if (is_dir($caPath)) { |
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$opts['ssl']['capath'] = $caPath; |
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} else { |
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$opts['ssl']['cafile'] = $caPath; |
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} |
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$this->streamContext = stream_context_create($opts); |
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} |
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/** |
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* Retrieve end point object |
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* |
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* @return Endpoint |
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*/ |
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public function getEndPoint(): Endpoint |
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{ |
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return $this->endpoint; |
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} |
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} |